根據句意及漢語提示完成句子。
1. There has been not much _____ (疾病) in the village this winter. The villagers are all healthy.
2. Nothing will _____(阻止) us from reaching our aims.
3. It's snowing hard. The ground is _____ (覆蓋) with snow.
4. Take this _____ (藥) ,and have a good rest, you can feel better.
5. I _____ (猜想) you don't agree with me.
6. Can you tell me the _____(差異) between the two words, Tom?
7. I have been there many times in the _____ (過去).
8. Computer was invented in 1946. It _____ (改變) a lot all over the world.
